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Old 12-16-2010, 01:39 AM   #7
traveler
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Join Date: Aug 2010
Location: Johnson City, TN
Posts: 30
The motorized valves and exterior lubrication may provide temporary easing on the pull for the valves, but the cause of the problem lies inside of the valve itself.
For decades these valves have been cheaply made (all brands) and are designed to be verticle, none are in rv's.
Inside is a teflon gasket that dries out and gets debris wedged between the gasket and the slide, both causing drag and eventually will break.
I have found the solution is to disassemble the valve, use Dupont 111 silicone lubricant that does not wash away, then reassemble.
You will be amazed at how easy the valve will pull for a long time to come.
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